12170023239 has 16 divisors (see below), whose sum is σ = 18180282240. Its totient is φ = 7176425760.

The previous prime is 12170023219. The next prime is 12170023253. The reversal of 12170023239 is 93232007121.

It is not a de Polignac number, because 12170023239 - 2²³ = 12161634631 is a prime.

It is a super-2 number, since 2×12170023239² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12170023219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4982409 + ... + 4984850.

It is an arithmetic number, because the mean of its divisors is an integer number (1136267640).

Almost surely, 2^12170023239 is an apocalyptic number.

12170023239 is a deficient number, since it is larger than the sum of its proper divisors (6010259001).

12170023239 is a wasteful number, since it uses less digits than its factorization.

12170023239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9967310.

The product of its (nonzero) digits is 4536, while the sum is 30.

The spelling of 12170023239 in words is "twelve billion, one hundred seventy million, twenty-three thousand, two hundred thirty-nine".